Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Sensitivities of various assays for different influenza A virus subtypes in stock virus preparations
| Influenza A virus subtype | Concn of stock virus (TCID50/ml) | Highest dilution yielding a positive result
|
||
|---|---|---|---|---|
| RT-PCR | Virus isolation | ELISA | ||
| A/Nanchang(H3N2) | 105.0 | 10−8 | 10−5 | 10−2 |
| A/Sydney(H3N2) | 105.0 | 10−8 | 10−5 | 10−1 |
| A/Texas(H1N1) | 105.0 | 10−8 | 10−5 | 10−2 |
